The following is a reconciliation of the numerator and denominator of basic and diluted earnings (loss) per share for the years ended December 31, 2017, 2016, and 2015:

(In thousands except per share data)	Year Ended December 31,
Numerator:	2017		2016			2015
Income from continuing operations attributable to Tivity Health, Inc. - numerator for earnings per share	$	61,230	$	56,091		$	43,634
Net income (loss) from discontinued operations attributable to Tivity Health, Inc. - numerator for earnings (loss) per share		2,485		(185,202	)		(74,581	)
Net income (loss) attributable to Tivity Health, Inc. - numerator for earnings (loss) per share	$	63,715	$	(129,111	)	$	(30,947	)

Denominator:
Shares used for basic income (loss) per share		39,357		36,999			35,832
Effect of dilutive stock options and restricted stock units outstanding:
Non-qualified stock options		436		344			568
Restricted stock units		549		538			364
Performance stock units		—		—			25
Warrants related to Cash Convertible Notes		1,709
Market stock units		496		194			10
CareFirst Warrants		—		—			55
Shares used for diluted income (loss) per share		42,547		38,075			36,854

Earnings (loss) per share attributable to Tivity Health, Inc. - basic:
Continuing operations	$	1.56	$	1.52		$	1.22
Discontinued operations	$	0.06	$	(5.01	)	$	(2.08	)
Net income (loss)	$	1.62	$	(3.49	)	$	(0.86	)

Earnings (loss) per share attributable to Tivity Health, Inc. - diluted:
Continuing operations	$	1.44	$	1.47		$	1.18
Discontinued operations	$	0.06	$	(4.86	)	$	(2.02	)
Net earnings (loss)	$	1.50	$	(3.39	)	$	(0.84	)

Dilutive securities outstanding not included in the computation of earnings (loss) per share because their effect is anti-dilutive:
Non-qualified stock options		4		708			903
Restricted stock units		12		333			220
Warrants related to Cash Convertible Notes		—		7,707			7,707
CareFirst Convertible Note		—		—			892
CareFirst Warrants		—		—			263